RTU Open 13
BO - 8
BO N/A - Relay Power Exhaust
N/A
N/A
- 1 & 3
Legend
- Analog Input
- Analog Output
- Digital Input
- Digital Output
*
- 24 Vac required at this wire to provide
status. Provide a jumper from
- 1 to
- 9 if no
safeties are utilized. See To wire inputs and outputs 14 (page ) for additional information on the RTU Open wiring harness assembly
terminations.
** Default input function
*** Parallel screw terminal at
(
- 1 =
- 6,
- 3 =
- 10,
- 5 =
- 2) may be used in place of the associated flying leads at
the harness (OPN-RTUHRN). See To wire inputs and outputs 14 (page ) for additional information.
Input wiring specifications
Thermistor
1000 feet
(305 meters)
22 AWG Unshielded
4-20 mA 3000 feet
(914 meters)
22 AWG Unshielded
Binary input
1000 feet
(305 meters)
22 AWG Unshielded
SPT (RNET) 500 feet
(152 meters)
22 AWG
4 conductor
Unshielded
Inputs
These RTU Open inputs accept the following signal types:
Support this
signal type...
1, 2
4-20 mA The input resistance on the positive (+) terminal is 250 Ohms.
The Aux Power Out terminal is capable of supplying 24 Vdc to
a 4-20 mA transducer, but the total current demanded must
not exceed 40 mA. If the voltage measured from the Aux
Power Out terminal to Gnd is less than 18 Vdc, you need to
use an external power supply.
3, 5, 8, 9 Binary (24 Vac) 24 Vac voltage, resulting in a 25 mA maximum sense current
when the contacts are closed
6, 7, 10 Thermistor 10 kOhm at 77° F
11 100k Potentiometer Typically used for 33CZT56SPT Setpoint Offset Potentiometer
